Minimum sample JobRequest (JSON)

{
   "subject":{
      "content":"subject"
   },
   "body":{
      "contentType":"text/plain",
      "content":"hello world"
   },
   "recipients":[
      {
         "mail":{
            "to":[
               {
                  "email":"to_friendly<to@example.com>"
               }
            ]
         }
      }
   ],
   "mail":{
      "from":{
         "email":"smpt_from_friendly<smtp-from@example.com>"
      }
   }
}